[EdZ]

Wouldn't you have to change the radius to create a "flatter" spot? There are no flat spots on a circle, but this talk of "flatter" spots is more like an ellipse. And the stroke is a circle.

Of the clubhead, yes because of the ground.

Of the force, the thrust, no because you are still driving downplane to both arms straight.

So in a sense you are 'scraping the ground', while still driving down, getting that nice thin, wide divot with excellent ball control. Even if it isn't an 'actual', it is potentially a nice way to get people to really feel the bending back of the right wrist.

Hit the ball as low as you can, and you'll get this feel. Get those hands ahead of the ball.

The force is ALWAYS driving downplane, that is what the line of compression is all about, that is what aiming point is all about, driving the hands to both arms straight.